Weather on October 21
Downey, CA
55 Years of Data
Avg High
80°F
Avg Low
59°F
Warmest
1999
83°F avg
Coldest
2010
59°F avg
About This Date
October 21st in Downey, CA typically brings warm fall weather, with average highs around 80°F and lows near 59°F. Over 55 years of records, the warmest October 21st was in 1999 (83°F average), while the coldest was 2010 (59°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 5% of October 21st dates historically. The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in Downey, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 59° | 72° | — | — |
| 2024 | 87° | 64° | 76° | — | — |
| 2023 | 85° | 59° | 72° | — | — |
| 2022 | 80° | 61° | 70° | — | — |
| 2021 | 82° | 55° | 69° | — | — |
| 2020 | 76° | 60° | 68° | — | — |
| 2019 | 94° | 72° | 83° | — | — |
| 2018 | 81° | 59° | 70° | — | — |
| 2017 | 79° | 56° | 67° | — | — |
| 2016 | 86° | 59° | 73° | — | — |
| 2015 | 84° | 61° | 72° | — | — |
| 2014 | 81° | 59° | 70° | — | — |
| 2013 | 79° | 51° | 65° | — | — |
| 2012 | 78° | 60° | 69° | — | — |
| 2011 | 78° | 56° | 67° | — | — |
| 2010coldest | 63° | 56° | 59° | — | — |
| 2009 | 84° | 58° | 71° | — | — |
| 2008 | 90° | 57° | 73° | — | — |
| 2007 | 93° | 56° | 74° | — | — |
| 2006 | 89° | 59° | 74° | — | — |
| 2005 | 78° | 54° | 66° | — | — |
| 2004 | 71° | 49° | 60° | — | — |
| 2003 | 102° | 61° | 81° | — | — |
| 2002 | 69° | 55° | 62° | — | — |
| 2001 | 74° | 55° | 64° | — | — |
| 2000 | 79° | 59° | 69° | — | — |
| 1999warmest | 97° | 70° | 83° | — | — |
| 1998 | 73° | 59° | 66° | — | — |
| 1997 | 74° | 60° | 67° | — | — |
| 1996 | 78° | 52° | 65° | — | — |
| 1995 | 76° | 58° | 67° | — | — |
| 1994 | 80° | 53° | 67° | — | — |
| 1993 | 85° | 60° | 72° | — | — |
| 1992 | 71° | 63° | 67° | 0.3" | — |
| 1991 | 76° | 68° | 72° | — | — |
| 1990 | 83° | 59° | 71° | — | — |
| 1989 | 74° | 58° | 66° | — | — |
| 1988 | 77° | 60° | 69° | — | — |
| 1987 | 82° | 56° | 69° | — | — |
| 1986 | 84° | 62° | 73° | — | — |
| 1985 | 68° | — | — | 0.08" | — |
| 1984 | 76° | 56° | 66° | — | — |
| 1983 | 84° | 62° | 73° | — | — |
| 1982 | 82° | 60° | 71° | — | — |
| 1981 | 91° | 55° | 73° | — | — |
| 1980 | 90° | 59° | 74° | — | — |
| 1979 | 73° | 51° | 62° | — | — |
| 1978 | 75° | 60° | 68° | — | — |
| 1977 | 76° | 58° | 67° | — | — |
| 1976 | 80° | 68° | 74° | 0.08" | — |
| 1975 | 70° | 59° | 64° | — | — |
| 1974 | 69° | 59° | 64° | — | — |
| 1973 | 71° | 62° | 67° | — | — |
| 1972 | 72° | 52° | 62° | — | — |
| 1971 | 82° | 50° | 66° | — | — |
55 years of data from MONTEBELLO